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MathGroup Archive 1999

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Re: Finding a relative prime

  • To: mathgroup at smc.vnet.net
  • Subject: [mg19698] Re: [mg19682] Finding a relative prime
  • From: "Arnold Knopfmacher" <arnoldk at cam.wits.ac.za>
  • Date: Sat, 11 Sep 1999 16:36:04 -0400
  • Organization: MS, University of the Witwatersrand
  • Sender: owner-wri-mathgroup at wolfram.com

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Arnold Knopfmacher

I'm using Mathematica 3.0 for the Mac, and I'm trying to figure out how
to get it to pick a random number that is relatively prime to another
number, p-1, where p is prime.  In other words, pick a random number k
such that 1) k is between 2 and p-1, and 2) k is relatively prime to p-1.
How can I do that in Mathematica 3.0?

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The Centre for Applicable Analysis and Number Theory:
http://www.wits.ac.za/science/number_theory/centre.htm
Arnold Knopfmacher:
http://sunsite.wits.ac.za/wits/science/number_theory/arnold.htm
Fax: 2711-4039317
email: arnoldk at gauss.cam.wits.ac.za


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